mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-13 05:54:23 +08:00
1a59d1b8e0
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
189 lines
4.5 KiB
C
189 lines
4.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Routines for Gravis UltraSound soundcards - Timers
|
|
* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
|
|
*
|
|
* GUS have similar timers as AdLib (OPL2/OPL3 chips).
|
|
*/
|
|
|
|
#include <linux/time.h>
|
|
#include <sound/core.h>
|
|
#include <sound/gus.h>
|
|
|
|
/*
|
|
* Timer 1 - 80us
|
|
*/
|
|
|
|
static int snd_gf1_timer1_start(struct snd_timer * timer)
|
|
{
|
|
unsigned long flags;
|
|
unsigned char tmp;
|
|
unsigned int ticks;
|
|
struct snd_gus_card *gus;
|
|
|
|
gus = snd_timer_chip(timer);
|
|
spin_lock_irqsave(&gus->reg_lock, flags);
|
|
ticks = timer->sticks;
|
|
tmp = (gus->gf1.timer_enabled |= 4);
|
|
snd_gf1_write8(gus, SNDRV_GF1_GB_ADLIB_TIMER_1, 256 - ticks); /* timer 1 count */
|
|
snd_gf1_write8(gus, SNDRV_GF1_GB_SOUND_BLASTER_CONTROL, tmp); /* enable timer 1 IRQ */
|
|
snd_gf1_adlib_write(gus, 0x04, tmp >> 2); /* timer 2 start */
|
|
spin_unlock_irqrestore(&gus->reg_lock, flags);
|
|
return 0;
|
|
}
|
|
|
|
static int snd_gf1_timer1_stop(struct snd_timer * timer)
|
|
{
|
|
unsigned long flags;
|
|
unsigned char tmp;
|
|
struct snd_gus_card *gus;
|
|
|
|
gus = snd_timer_chip(timer);
|
|
spin_lock_irqsave(&gus->reg_lock, flags);
|
|
tmp = (gus->gf1.timer_enabled &= ~4);
|
|
snd_gf1_write8(gus, SNDRV_GF1_GB_SOUND_BLASTER_CONTROL, tmp); /* disable timer #1 */
|
|
spin_unlock_irqrestore(&gus->reg_lock, flags);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Timer 2 - 320us
|
|
*/
|
|
|
|
static int snd_gf1_timer2_start(struct snd_timer * timer)
|
|
{
|
|
unsigned long flags;
|
|
unsigned char tmp;
|
|
unsigned int ticks;
|
|
struct snd_gus_card *gus;
|
|
|
|
gus = snd_timer_chip(timer);
|
|
spin_lock_irqsave(&gus->reg_lock, flags);
|
|
ticks = timer->sticks;
|
|
tmp = (gus->gf1.timer_enabled |= 8);
|
|
snd_gf1_write8(gus, SNDRV_GF1_GB_ADLIB_TIMER_2, 256 - ticks); /* timer 2 count */
|
|
snd_gf1_write8(gus, SNDRV_GF1_GB_SOUND_BLASTER_CONTROL, tmp); /* enable timer 2 IRQ */
|
|
snd_gf1_adlib_write(gus, 0x04, tmp >> 2); /* timer 2 start */
|
|
spin_unlock_irqrestore(&gus->reg_lock, flags);
|
|
return 0;
|
|
}
|
|
|
|
static int snd_gf1_timer2_stop(struct snd_timer * timer)
|
|
{
|
|
unsigned long flags;
|
|
unsigned char tmp;
|
|
struct snd_gus_card *gus;
|
|
|
|
gus = snd_timer_chip(timer);
|
|
spin_lock_irqsave(&gus->reg_lock, flags);
|
|
tmp = (gus->gf1.timer_enabled &= ~8);
|
|
snd_gf1_write8(gus, SNDRV_GF1_GB_SOUND_BLASTER_CONTROL, tmp); /* disable timer #1 */
|
|
spin_unlock_irqrestore(&gus->reg_lock, flags);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
|
|
*/
|
|
|
|
static void snd_gf1_interrupt_timer1(struct snd_gus_card * gus)
|
|
{
|
|
struct snd_timer *timer = gus->gf1.timer1;
|
|
|
|
if (timer == NULL)
|
|
return;
|
|
snd_timer_interrupt(timer, timer->sticks);
|
|
}
|
|
|
|
static void snd_gf1_interrupt_timer2(struct snd_gus_card * gus)
|
|
{
|
|
struct snd_timer *timer = gus->gf1.timer2;
|
|
|
|
if (timer == NULL)
|
|
return;
|
|
snd_timer_interrupt(timer, timer->sticks);
|
|
}
|
|
|
|
/*
|
|
|
|
*/
|
|
|
|
static struct snd_timer_hardware snd_gf1_timer1 =
|
|
{
|
|
.flags = SNDRV_TIMER_HW_STOP,
|
|
.resolution = 80000,
|
|
.ticks = 256,
|
|
.start = snd_gf1_timer1_start,
|
|
.stop = snd_gf1_timer1_stop,
|
|
};
|
|
|
|
static struct snd_timer_hardware snd_gf1_timer2 =
|
|
{
|
|
.flags = SNDRV_TIMER_HW_STOP,
|
|
.resolution = 320000,
|
|
.ticks = 256,
|
|
.start = snd_gf1_timer2_start,
|
|
.stop = snd_gf1_timer2_stop,
|
|
};
|
|
|
|
static void snd_gf1_timer1_free(struct snd_timer *timer)
|
|
{
|
|
struct snd_gus_card *gus = timer->private_data;
|
|
gus->gf1.timer1 = NULL;
|
|
}
|
|
|
|
static void snd_gf1_timer2_free(struct snd_timer *timer)
|
|
{
|
|
struct snd_gus_card *gus = timer->private_data;
|
|
gus->gf1.timer2 = NULL;
|
|
}
|
|
|
|
void snd_gf1_timers_init(struct snd_gus_card * gus)
|
|
{
|
|
struct snd_timer *timer;
|
|
struct snd_timer_id tid;
|
|
|
|
if (gus->gf1.timer1 != NULL || gus->gf1.timer2 != NULL)
|
|
return;
|
|
|
|
gus->gf1.interrupt_handler_timer1 = snd_gf1_interrupt_timer1;
|
|
gus->gf1.interrupt_handler_timer2 = snd_gf1_interrupt_timer2;
|
|
|
|
tid.dev_class = SNDRV_TIMER_CLASS_CARD;
|
|
tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
|
|
tid.card = gus->card->number;
|
|
tid.device = gus->timer_dev;
|
|
tid.subdevice = 0;
|
|
|
|
if (snd_timer_new(gus->card, "GF1 timer", &tid, &timer) >= 0) {
|
|
strcpy(timer->name, "GF1 timer #1");
|
|
timer->private_data = gus;
|
|
timer->private_free = snd_gf1_timer1_free;
|
|
timer->hw = snd_gf1_timer1;
|
|
}
|
|
gus->gf1.timer1 = timer;
|
|
|
|
tid.device++;
|
|
|
|
if (snd_timer_new(gus->card, "GF1 timer", &tid, &timer) >= 0) {
|
|
strcpy(timer->name, "GF1 timer #2");
|
|
timer->private_data = gus;
|
|
timer->private_free = snd_gf1_timer2_free;
|
|
timer->hw = snd_gf1_timer2;
|
|
}
|
|
gus->gf1.timer2 = timer;
|
|
}
|
|
|
|
void snd_gf1_timers_done(struct snd_gus_card * gus)
|
|
{
|
|
snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_TIMER1 | SNDRV_GF1_HANDLER_TIMER2);
|
|
if (gus->gf1.timer1) {
|
|
snd_device_free(gus->card, gus->gf1.timer1);
|
|
gus->gf1.timer1 = NULL;
|
|
}
|
|
if (gus->gf1.timer2) {
|
|
snd_device_free(gus->card, gus->gf1.timer2);
|
|
gus->gf1.timer2 = NULL;
|
|
}
|
|
}
|